Brake mechanism



March 24, 1931.j -w. WH. BAsELT 1,797,895

i v BHAIE MECHANISM :filed oep. 11", 1928 2 sheets-sheet 2 Patented Mar. 24, 193i UNITED STATES. PATEN'I: fol-*Fles i WALTER nrnsnm, on CHICAGO, ILLINOIS, nssrenon 'ro mnnrcANs'rE-EL FOUN- nains, or emesso, ILLINOIS, A ycoaronn'rron or NEW JERSEY BRAKE MECHANIH- Appncmon meu nemer 11, 192s. germ No. 311355.

This invention relates to brake-mechanism forl railway trucks, particularly for use on locomotive trailer trucks. i

One object of the invention is to provide a simple, durable and eiiicient brake-mecha- Y nism arrangement in which the various parts cooperate in a manner to' meet service requirements and which is adapted yto meet the peculiar and close clearance conditions which obtain in a locomotive trailer truck. This and other objects are accomplished by means of the arrangement disclosed on the accompanying sheets of drawings, in which- Y i Figure 1 is a fra entary side elevation of`a railway truck mcluding brake mechanisl'n embodying m invention;

vFigure 2 'is a si e elevation of a portion only of the brake mechanism on a larger scale, embodying my invention;

. Figure 3 is a top plan view of the arrange-` ment shown in Figure 2; and v Figure et is an end elevation of the arrangement shown in Figure 2.

The various novel features of the invention will be apparent from the vfollowing description and drawings and will'be particularly pointed out in the appended claims.

Referring to the figures of the drawings,

it will be noted that the invention is illustrated inconnection with clasp type of brake mechanism as applied to a locomotive trailer truck.

It will be sufficient in a general description of a part of the mechanism to statel that properly supported interconnected truck levers i 10 are mounted on each side of the truck and are operatively connected to brake heads 11 carrying brake shoes 12 adapted to engage or clasp opposite sides of the associated truck wheels 13 for braking purposes. The invention has to do primarily with the brake mechy anism arrangement at the locomotive end of the trailer truck. Referring particularly to Figures 2, 3l and 4, it will be noted that a brake cylinder 14 is mounted centrally of the truck frame 15 at the motor end thereof, said cylinder having an associated piston rod 16 pivotally connected to the middle point 17 of an equalizer lever 18. In view `of the fact that the brake mechanism is duplicated on opposite sides'of the equalizing lever, it will be suflicient to describe that mechanism on one side only. Pivotally connected at 19 to an intermediate point of the equalizin lever 18 is a strap link 20, to one end of whic at 21 is pivotally connected the lower end of avcylinder lever2`2 which Yextends upwardly and outwardly toward the side of the truck. The upper end of the cylinder lever 22 is pivotally connected at 23 to a bracket 24 connected to the truck frame 15 at one end thereof at a point in the same longitudinal plane as the truck wheels 13. Pivotally connected at 25 to. an intermediate point of the cylinder lever 22 is a pull rod 26 which is operatively connected to the truck levers 10 on of the truck. l

For properly supporting the brake mechanism in its operative movements at the motor end of the truck, a bracket 27 is provided which bracket is connected toV and supported by thetruck frame 15 adjacent to and at oneside of the cylinder `14. In this particular instance, the bracket takes the form of a strap 28 inthe form of a triangle and having an u per horizontally arranged portion 29 upon w ich preferably there is secured a block 30 for providing an upper surface upon which the associated side one end of the equalizing lever 18 moves or slides. Connected tothe cylinder lever 22 v tion which is slidably mounted upon the upperA surface of the block 30. It will be seen, therefore, that the bracket 27 furnishes af slidable support not only for the equalizing lever 1 8 but also for the associated cylinder lever, each of which is operativelyconnected to the, equalizing lever and the truck levers. In addition to forming a slidablesupport for said equalizing and cylinder levers, the associated brackets act as safety elements for preventing said levers from falling to the ground in the'event they become disconnected from their normal attachments or hangings.

It will be appreciated that when the equalizing lever 18 is forced outwardly during the braking action, the link 20 and all of the rods connected to the cylinder levers and truck levers will be in tension for applying brakinfr pressures to the truck wheels.

ty. means of the arrangement herein particularly jshown and described, the object of the invention is accomplished.

It is my invention to cover all modifications of the invention falling within the spirit and'scope of the following claims. l

I claim: Y

1. In brake mechanism for railway trucks, the combination of a truck frame, truck brake levers, a brake cylinder carried by said frame, an equalizing lever operatively associated with said cylinder, a cylinder lever operatively connected to said e ualizing lever and said brake levers, and a racket carried by said frame u on which both said equalizing lever and said cylinder lever are movably supported. e

2. In brake mechanism for railway trucks, the combination of a truck frame, truck brake 6. In brake mechanism for railway trucks, the combination of a truck frame, truck brake levers, a brake cylinder mounted at one end ofthe truck frame and centrally thereof, a horizontal equalizing lever connected to the Viston rod associated with said cylinder, a

racket carried by said frame upon which said equalizing lever is slidably mounted, a

link connected to said equalizing lever, a supported inclined c linder lever ivotally connected to said lin and also sli ably mounted on said bracket, said cylinder lever being 0peratively connected to said truck brake levers. v Si ned at Chicago, Illinois, this 2nd day of Octo r, 1928.

' -WALTER H. BASELT.

ilevers, a brake cylinder carried 'by said f frame, an equalizing lever operatively as sociated with said cylinder, a cylinder lever operatively connected to said equalizing lever, and means carried by said frame u on which both said equalizing lever and sai lever are slidably supported.

3. In brake mechanism for railway trucks, the combination of a truck frame, a brake Y cylinder cylinder carried by said frame, an equalizing lever operatively associated with said `cylinder, a cylinder lever operatively connected to said equalizing'lever, and a bracket carried y by said frame upon which both said equalizing lever and said cylinder lever are movably supported.

4. In brake mechanism for railway trucks, the combination of a truck frame, a brake cylinder carried by said frame` centrally at one end thereof, truck levers arranged on opposite sides of said truck, an equalizin lever operatively associated with said cy inder, cylinder levers arranged on opposite sides of said cylinder and operativelyconnected to said equalizing lever and the associated truck levers, and brackets carried by said frame upon opposite sides ofV said cylinder, each 'of which brackets movably supports said equalizing lever and the associated cylinder lever. 

